YAO Shaobo, HU Kongzhen, TANG Ganghua, et al. Automated synthesis of novel cell death imaging tracer 18F-FPDuramycin[J]. Nuclear techniques, 2014, 37(3): 030301
YAO Shaobo, HU Kongzhen, TANG Ganghua, et al. Automated synthesis of novel cell death imaging tracer 18F-FPDuramycin[J]. Nuclear techniques, 2014, 37(3): 030301 DOI: 10.11889/j.0253-3219.2014.hjs.37.030301.
Background: The noninvasive imaging of cell death plays an important role in the evaluation of degenerative diseases and detection of tumor treatments. Duramycin
a peptide with 19-amino acid
is produced by Streptoverticillium cinnamoneus. It binds specifically to phosphatidylethanolamine (PE)
a novel molecular target for cell death. Purpose: The aim is to develop a synthetic method to label duramycin using 18F ion. The automated synthesis was carried out by multi-step procedure on the modified PET-MF-2V-IT-I synthesizer. Methods: Firstly
the prosthetic group of 4-nitrophenyl 2-[18F]fluoropropionate (18F-NFP) was automatically synthesized by a convenient three-step procedure. Secondly
18F-FPDuramycin was synthesized by conjunction of 18F-NFP with duramycin
which was purified by a solid-phase extraction cartridge. Orthogonal test was performed to confirm the suitable reaction conditions (solvent
base and temperature). Results: The radiochemical yields of 18F-NFP were (25±5)% (n=10
decay-uncorrected) based on [18F]fluoride in 80 min. 18F-FPDuramycin was obtained with yield of (70±3)% (n=8
decay-uncorrected) based on 18F-NFP within 20 min. The radiochemical purity of 18F-FPDuramycin was greater than 99% and the specific activity was greater than (23.7±13.7) GBq??mol?1 (n=10). Conclusion: 18F-FPDuramycin injection is easy to be prepared with “two-pot reaction” and is a promising radiotracer used for the clinical and scientific study on positron emission tomography (PET) imaging.Cited